Bravoo Man Defeat Bravoo Man in the Ancient Ruins.

Colonel Red Rescue Yellow by defeating Smash Daisaku.

Crab Attack Defeat Crab Force in the Underground Mine.

Bit more tricky, on normal mode green will transform 3 times, if he doesn't look like the above trophy image above on the 3rd time he transforms, let him kill you and keep trying the fight over till you get the crab
yet again use green green to kill him.

OR!
You can play it on insane mode and face all of Green's transformations, ensuring you get Crab Force